Flame-retardant power cable

Abstract

The utility model relates to the technical field of power cables, in particular to a flame-retardant power cable, which comprises a flame-retardant protective sleeve, a plurality of protective mechanisms are arranged on the outer side of the flame-retardant protective sleeve, each protective mechanism comprises an upper protective cover, a protective sleeve and a lower protective cover, the protective sleeves are fixed on the outer side of the flame-retardant protective sleeve, and the lower protective covers are fixed on the outer side of the flame-retardant protective sleeve. A plurality of positioning blocks are integrally formed on the outer side of the protective sleeve, a plurality of clamping grooves matched with the positioning blocks are formed in the upper protective cover and the lower protective cover, two inserting grooves matched with the bottom end of the upper protective cover are formed in the top end of the lower protective cover, two grooves are formed in the upper protective cover, a clamping block is arranged in each groove, and the clamping blocks are arranged in the inserting grooves. Two guide columns are fixed to the opposite side walls of the two clamping blocks, four sliding grooves for the guide columns to slide are formed in the upper protective cover, each guide column is sleeved with a spring, and two inserting grooves matched with the clamping blocks are formed in the lower protective cover. The flame-retardant protective sleeve can be prevented from being abraded, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of power cable technology, specifically to a flame-retardant power cable. Background Technology

[0002] Power cables are cable products used to transmit and distribute high-power electrical energy in the main lines of power systems. Existing flame-retardant power cables can be referenced in application number CN201721783622.1, which describes a flame-retardant power cable comprising a protective sheath, a fire-resistant layer, a waterproof layer, a wrapping layer, a shielding layer, a first filler layer, and a cable body. The fire-resistant layer is located inside the protective sheath, the waterproof layer inside the fire-resistant layer, the wrapping layer inside the waterproof layer, the shielding layer inside the wrapping layer, the first filler layer inside the shielding layer, and the cable body inside the first filler layer. The cable body includes a protective layer, a second filler layer, an insulating shielding layer, an insulating layer, a conductor shielding layer, and a conductor. The protective layer is located inside the first filler layer, the second filler layer is located inside the protective layer, the insulating shielding layer is located inside the second filler layer, the insulating layer is located inside the insulating shielding layer, the conductor shielding layer is located inside the insulating layer, and the conductor is located inside the conductor shielding layer. This flame-retardant power cable improves fire resistance, waterproofing, and safety. However, this flame-retardant power cable is prone to wear during installation, affecting normal use. Utility Model Content

[0003] To address the problems in the existing technology, this utility model provides a flame-retardant power cable.

[0004] The technical solution adopted by this utility model to solve its technical problem is a flame-retardant power cable, including a flame-retardant protective sleeve. The outer side of the flame-retardant protective sleeve is provided with multiple protective mechanisms. The flame-retardant protective sleeve is provided with a waterproof layer inside. The waterproof layer is provided with a fireproof layer inside. The fireproof layer is provided with a shielding layer inside. The shielding layer is provided with a filling layer inside. The filling layer is provided with an insulation layer inside. The insulation layer is provided with a copper conductor.

[0005] The protective mechanism includes an upper protective cover, a protective sleeve, and a lower protective cover. The protective sleeve is fixed to the outside of the flame-retardant protective sleeve. Multiple positioning blocks are integrally formed on the outside of the protective sleeve. Multiple slots that fit the positioning blocks are provided inside the upper and lower protective covers. The top of the lower protective cover has two slots that fit the bottom of the upper protective cover. The upper protective cover has two grooves, each groove containing a locking block. Two guide posts are fixed to the opposite sidewalls of the two locking blocks. The upper protective cover has four sliding grooves for the guide posts to slide in. Each guide post is fitted with a spring. The lower protective cover has two slots that fit the locking blocks.

[0006] By adopting the above technical solution, the upper protective cover, protective sleeve, and lower protective cover can provide a certain degree of protection for the flame-retardant outer sleeve during the laying process, preventing the flame-retardant outer sleeve from directly contacting the ground or building. When the upper and lower protective covers need to be replaced after wear, simply push the locking block, the spring is squeezed, and the end of the locking block comes out of the slot on the lower protective cover, making it easy to remove and replace the upper and lower protective covers.

[0007] Specifically, both of the card blocks have multiple anti-slip protrusions integrally formed on them.

[0008] By adopting the above technical solution, the anti-slip protrusions facilitate the pushing of the locking block.

[0009] Specifically, the bottom of the lower protective cover has two integrally formed protrusions, and each of the two protrusions is provided with mounting holes.

[0010] By adopting the above technical solution, the bottom end of the bolt passes through the mounting hole on the protrusion, which facilitates the fixing of the lower protective cover to the ground or building structure, thereby improving the stability of the power cable.

[0011] Specifically, the fireproof layer is made of aluminum hydroxide.

[0012] By adopting the above technical solution and incorporating aluminum hydroxide material, the fire resistance and flame retardant properties of power cables are improved.

[0013] Specifically, the shielding layer is composed of multiple sets of copper braided tapes wound and connected together.

[0014] By adopting the above technical solution, the shielding layer formed by multiple sets of copper braided tapes can improve the shielding effect.

[0015] The beneficial effects of this utility model are:

[0016] (1) The flame-retardant power cable of the present invention, with the upper protective cover, protective sleeve and lower protective cover, can provide certain protection for the flame-retardant outer sheath during the laying process and prevent the flame-retardant outer sheath from directly contacting the ground or building.

[0017] (2) When the upper and lower protective covers of the flame-retardant power cable described in this utility model need to be replaced after wear, simply push the locking block, the spring is squeezed, and the end of the locking block is dislodged from the slot on the lower protective cover, making it convenient to remove and replace the upper and lower protective covers. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the protective sleeve of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the upper protective cover of this utility model;

[0022] Figure 4 For the present utility model Figure 3 Enlarged view of the structure at point A in the middle;

[0023] Figure 5 This is a cross-sectional view of the present invention.

[0024] In the diagram: 1. Flame-retardant outer sheath; 10. Waterproof layer; 11. Fireproof layer; 12. Shielding layer; 13. Filling layer; 14. Insulation layer; 15. Copper conductor; 2. Protective mechanism; 20. Upper protective cover; 21. Protective sleeve; 22. Lower protective cover; 23. Protrusion; 24. Positioning block; 25. Locking block; 26. Guide post; 27. Spring; 28. Anti-slip protrusion. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] To prevent wear of the flame-retardant outer sheath 1, as one embodiment of this utility model, such as Figures 1 to 5 As shown, the flame-retardant power cable of this utility model includes a flame-retardant protective sleeve 1, a plurality of protective mechanisms 2 on the outside of the flame-retardant protective sleeve 1, a waterproof layer 10 inside the flame-retardant protective sleeve 1, a fireproof layer 11 inside the waterproof layer 10, a shielding layer 12 inside the fireproof layer 11, a filling layer 13 inside the shielding layer 12, an insulation layer 14 inside the filling layer 13, and a copper conductor 15 inside the insulation layer 14.

[0027] The protective mechanism 2 includes an upper protective cover 20, a protective sleeve 21, and a lower protective cover 22. The protective sleeve 21 is fixed to the outside of the flame-retardant protective sleeve 1 by adhesive. The protective sleeve 21 is made of flame-retardant rubber. Multiple positioning blocks 24 are integrally formed on the outside of the protective sleeve 21. Multiple slots that fit the positioning blocks 24 are provided in both the upper protective cover 20 and the lower protective cover 22. The top of the lower protective cover 22 is provided with two slots that fit the bottom of the upper protective cover 20. The upper protective cover 20 is provided with two grooves, each groove is provided with a locking block 25. Two guide posts 26 are welded and fixed to the opposite sidewalls of the two locking blocks 25. The upper protective cover 20 is provided with four sliding grooves for the guide posts 26 to slide. Each guide post 26 is fitted with a spring 27. The lower protective cover 22 is provided with two slots that fit the locking blocks 25.

[0028] During use, the upper protective cover 20, protective sleeve 21, and lower protective cover 22 provide certain protection for the flame-retardant outer sheath 1 during installation, preventing it from directly contacting the ground or building. When the upper protective cover 20 and lower protective cover 22 need to be replaced due to wear, simply push the locking block 25 by hand. The spring 27 will be compressed, and the end of the locking block 25 will disengage from the slot on the lower protective cover 22, making it easy to remove and replace the upper protective cover 20 and lower protective cover 22. When installing the upper protective cover 20 and lower protective cover 22, push the locking block 25 to put the upper protective cover 20 and lower protective cover 22 onto the protective sleeve 21. The protrusion 23 facilitates the positioning of the upper protective cover 20 and lower protective cover 22. Release the locking block 25, and the spring 27 will push the locking block 25 back to its original position. The end of the locking block 25 will then be inserted into the slot on the lower protective cover 22, facilitating the installation of the upper protective cover 20 and lower protective cover 22.

[0029] To facilitate the activation of block 25, for example, as follows: Figure 4 As shown, both of the card blocks 25 have multiple anti-slip protrusions 28 integrally formed on them.

[0030] For ease of installation, an example is provided, such as Figure 1 As shown, the bottom end of the lower protective cover 22 has two integrally formed protrusions 23, and each of the two protrusions 23 is provided with mounting holes.

[0031] During installation, the bottom end of the bolt is passed through the mounting hole on the protrusion 23, which makes it easy to fix the lower protective cover 22 to the ground or building structure, thus improving the stability of the power cable.

[0032] To improve the fireproof and flame-retardant effect, the fireproof layer 11 is made of aluminum hydroxide.

[0033] To improve the shielding effect, the shielding layer 12 is made of multiple sets of copper braided tapes wound together.

[0034] When this utility model is in use, the upper protective cover 20, the protective sleeve 21, and the lower protective cover 22 can provide certain protection for the flame-retardant outer sheath 1 during the laying process, preventing the flame-retardant outer sheath 1 from directly contacting the ground or building.

[0035] The flame-retardant outer sheath 1 and the fireproof layer 11 improve the fire-retardant performance, and the shielding layer 12, which is made of multiple sets of copper braided strips, improves the shielding effect.

[0036] When the upper protective cover 20 and the lower protective cover 22 need to be replaced after wear, simply push the locking block 25 by hand. The spring 27 will be squeezed, and the end of the locking block 25 will disengage from the slot on the lower protective cover 22, making it easy to remove and replace the upper protective cover 20 and the lower protective cover 22.

[0037] When installing the upper protective cover 20 and the lower protective cover 22, push the locking block 25 to put the upper protective cover 20 and the lower protective cover 22 onto the protective sleeve 21. The protrusion 23 facilitates the positioning of the upper protective cover 20 and the lower protective cover 22. Release the locking block 25, and the spring 27 pushes the locking block 25 to reset. The end of the locking block 25 is inserted into the slot on the lower protective cover 22, which facilitates the installation of the upper protective cover 20 and the lower protective cover 22.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents. Contents not described in detail in this utility model are considered prior art known to those skilled in the art.

Claims

1. A flame-retardant power cable, characterized in that, The application relates to a flame-retardant protective sleeve (1) which is provided with a plurality of protection mechanisms (2) on the outer side, is internally provided with a waterproof layer (10), is internally provided with a fireproof layer (11), is internally provided with a shielding layer (12), is internally provided with a filling layer (13), is internally provided with an insulating layer (14), and is internally provided with a copper conductor (15). The protection mechanism (2) comprises an upper protective cover (20), a protective sleeve (21) and a lower protective cover (22), the protective sleeve (21) is fixed on the outer side of the flame-retardant protective sleeve (1), a plurality of positioning blocks (24) are integrally formed on the outer side of the protective sleeve (21), a plurality of clamping grooves matched with the positioning blocks (24) are arranged in the upper protective cover (20) and the lower protective cover (22), two insertion grooves matched with the bottom end of the upper protective cover (20) are arranged at the top end of the lower protective cover (22), two clamping blocks (25) are arranged in each recess, two guide columns (26) are fixed on the opposite side walls of the two clamping blocks (25), four sliding grooves for the guide columns (26) to slide are arranged in the upper protective cover (20), springs (27) are sleeved on the guide columns (26), and two insertion grooves matched with the clamping blocks (25) are arranged on the lower protective cover (22).

2. A fire resistant power cable according to claim 1, characterised in that A plurality of anti-skid protrusions (28) are integrally formed on the two clamping blocks (25).

3. A fire resistant power cable according to claim 1, characterised in that Two protruding blocks (23) are integrally formed at the bottom end of the lower protective cover (22), and mounting holes are arranged on the two protruding blocks (23).

4. A fire resistant power cable according to claim 1, characterised in that The fireproof layer (11) is made of aluminum hydroxide material.

5. A fire resistant power cable according to claim 1, characterised in that The shielding layer (12) is formed by winding and connecting a plurality of copper woven belts.

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